Switched from system call to fileutils for creating coverage_path when missing (using mkdir -p) so it (hopefully) works on windows as well.
Switched from system call to fileutils for creating coverage_path
when missing (using mkdir -p) so it (hopefully) works on windows as well.

Thanks to cmichon for pointing this out.

Fixes #3 :)

mallikarjunayaddala/simplecov,gerry3/simplecov,hugopeixoto/simplecov,colszowka/simplecov,playpasshq/simplecov,bborn/simplecov,QuickPay/simplecov,irfanah/simplecov,colszowka/simplecov,ptashman/simplecov